One ui 4 developer preview is ready and will be announced next week.

[ASHME-GLOBAL]

OneUi 4 is Ready to go will see it next week , S21 user's will be the first to get Dev Beta builds

[GalaxyTechie]

Here's my huge features wishlist for One UI 4:
First Post: https://r2.community.samsung.com/t5/Tech-Talk/Updated-On-5th-July-One-UI-4-Huge-Features-Wishlist/td...
Second Post: https://r2.community.samsung.com/t5/Tech-Talk/Updated-On-8th-July-One-UI-4-Huge-Features-Wishlist/td...
Third Post: https://r2.community.samsung.com/t5/Tech-Talk/Updated-On-13th-July-One-UI-4-Huge-Features-Wishlist/t...
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